Building block



Dec. 18, 1928. 1,695,443

s. STUDLEY, JR

BUILDING BLOCK Filed Sept. 16, 1927 Patented Dec. is, 1928.

'i GILBERT STUDLEYQJR, 0F, Yen-mourn, MAssAci t-Isrirrs ,7 Applicationfiie'as t benie,i927! sr ai -ivorz asvsi i fThis invention relates to acenienti'tious building block, particularly adapted for-use inconstructingcesspools, drains andthe like.

The object ofthe invention istoprovidea building blockof ,tl'i'echaracter-specified, of a novel and superior construction, which is particularly adapted for the construction ofthe walls of a cesspool or;drain, in a rapidand sists in the cementitious molded blockhereinafterdescribed and particularly defined in the claims at theend of thisspecification.

In .thedrawing illustrating the preferred embodiment of theinvention,Fig. 1 is a perspective view of apart of a cesspool or drain 7j constructedof building blocks embodying the "curved inner and outersides 10, 12, with a present invention Fig. 2 is a plan View of theimproved block; Fig. 3', a front View of the same; Fig. 4 is a bottomplan view of the block show'ni'n Fig. 3; and Fig. 5 is a detail showinga modifiedform.-of tongue and groove construction.

Referring to the drawing, the improved building block is preferablycomposed of hardened, cementitious material, such as Portland cement andsand, formed into special shape as will bedescribed.

Referring, now to the drawing, the illustrated building block ispreferably composed of a mixture of cementand sandin any usual orpreferred proportions, aiid nay be molded in a suitable mold to providethe block with tongue 13 upon one end Wall 14, and with a; groove 15on-the other end wall 16..

Th'e'block is further provided with a drain;

age slot 17 preferablymolded in the bottom wall of the block, andextended from the outer to the inner sides 10, -12 of theblo'cktovpermit free drainage.therethrough.

In order to facilitatethemolding operation, and particularlythe'operation of withdrawing the block from the mold, I prefer to bevel ortaper the sidewalls 21:, 22 of the slot 17, andpreferably in a directionfromthe in ner SIClG' lOto the-outer side .12, asshown.

In practice, I preferto mold-the 'ceinenti--- tious blocks inapproximately the following dimensionsflen gth I6 inches; ,widtl linchesi and height 8 inches. The drainageslotis preferably made of alength of; about 71,4, inches at the inner Wall lOoftheblo k, d

7 inches at the outer wall-0f the block. The",

length of the'block, leaving bearing portions 23, 24 in the bottom Wallof the blockof subslot is preferably disposed centrallyof'the"stantially inches in length. The drainage slot is preferably made aboutfl inches in height; 7 I T e side walls of a cesspoolor draininay berapidly and economically constructedby use I of the present block, andin use succeeding tiers of the blocksfare laid. up, either with orwithout grout, Withthe tongue of one block fitted into the groove of,thenext adjacent block, as illustrated in Fig. 1.

The curvature of the block andthe be laid up on any desiredcurvaturewithin practical limits, the grooves being made sufficientlylarger than the tongues to provide for some clearance. In laying up theWall, it is also preferred to lay the. blocks so as toybreak joints, and

when so laid, the drainage slots are spaced 1 to distribute the drainageeffectively, as will be apparent from inspection ofjFig. 1.

slot is conducive to insuring efficient drainthe slots becoming stoppedup.

age at all times with minimum liability of tongue] and grooveconstruction enable theblocksto' The provision of the elongated drainagei i In addition the simplicity of the present I construction of blockenables the blocks to be manufactured more economically than otherconstructions of drainage blocks of which I am, aware.

The provision of the'bevel end walls21,-22 i I ofthe drainage slot,enables the blocks to be readily removed from the molds with minimumliability of breaking the blocks.

In Fig. 5, a modified form ofa tongue 25, andof a groove2 6,is shown, inwhich the cooperating surfaces are formedas portions of a cylinder. 1This construction enables the blocks to be set upwithin relatively'largement. n

v limits of curvature while maintaining the; I tongue and grooves ininterlocked arrange \Vhile the preferred embodiment of the invention hasbeen illustrated and described, it is to be understood that theinventionmay be embodied in other forms Withinthe sfiope of thefollowing claims.

Having thus described the invention, What is claimed is r 1. A buildingblock of the character specified, comprising an elongated body portionprovided with an openelongated slot in. the

ottom Wall thereof extendedfrom the inner to'ithe outer wallof theblock-and provided with beveled end Walls converging toward the outerWall of saidhlook, a,

2. A molded cementitious block; for the purpose specified, comprising acurved elon: gatedbloek having atongueat one end and a groove on theother, and provided in its bottom Wall with an elongated drainage slotextended throughthe body" thereof,,sa1d slot eing provided'iwith bemlafinde llfl for the purpose specified;

3; A" molded cementitious block for the purpose-specified; comprising-ecurved elongated block having a tongue at one end and a groove on theother, and provided in one drainage slot extended throu h the bodythereof, saidslothaving its end Walls taper- 'of its longitudinal wallswith an elongated ing from the concaveto. thevconvex side. wall 30thereof,

In testimony whereof, I havesigned my name to this. specification.

: GILBERT simmer, Jm

